$ git clone -n https://src.fedoraproject.org/rpms/git.git /var/lib/mock/f38-build-side-42-init-devel-761784-27706/root/chroot_tmpdir/scmroot/git
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-761784-27706/root/chroot_tmpdir/scmroot/git'...
$ git fetch origin ee7f0d47a7a5bbcc3640435ffa29a07495e0695b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/git
 * [new ref]         ee7f0d47a7a5bbcc3640435ffa29a07495e0695b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee7f0d4 update to 2.41.0